来个大佬看看 可以跑，但是得不到结果

OK

#include<stdio.h>#include<string.h>#include<stdlib.h>struct node{ char name[20]; struct node*link;};typedef struct node NODE;void output (NODE*head){ NODE*p,*q; int i=0; p=head->link; while(p!=NULL) { printf("%2d:%s/n",++i,p->name); q=p; p=p->link; free(q); }}void main(){ int i=0,flag=1; char name[20]; NODE*head, *p, *q; head=(NODE*)malloc (sizeof(NODE)); strcpy(head->name,NULL); head->link=NULL; printf("Input Students:/n");do{ printf("No.%2d:",++i);gets(name);if(strlen(name)==0)flag=0;else{ p=(NODE*)malloc(sizeof(NODE)); strcpy(p->name,name); q=head; while(q->link!=NULL) if(strcmp(p->name,q->link->name)>0) break; else q=q->link; p->link=q->link; q->link=p;}}while(flag);printf("Output:\n");output(head);}